What a bunch of cute dogs you all have!
Lou has just recently started acting like a guard dog. The funniest is when he tries to guard our cats. 1 cat runs in terror and the other thinks its very cool. As soon as he is done growling at the other dog to leave his cat alone, the cats walks over to him and sits down right next to him like he knows the Lou is his protector.
He has single dew claws in back and a hook at the end of his tail. His coat changes quite a bit with the seasons.
When people ask what he is I tell them he is a European Mountain dog, I figure that covers Pyrs, Kuvasz, Anatolian Shepherd, etc.